Add append tag support.

buku

@@ -436,12 +436,37 @@ class BukuDb:
         except Exception as e:
             print('\x1b[1mEXCEPTION\x1b[21m [add_bookmark]: (%s) %s' % (type(e).__name__, e))
 
-    def update_bookmark(self, index, url='', title_manual=None, tag_manual=None, desc=None):
+    def append_tag_at_index(self, index, tag_manual):
+        """ Append tags for bookmark at index
+
+        :param index: int position of record, 0 for all
+        :tag_manual: string of comma-separated tags to add manually
+        """
+
+        if index == 0:
+            resp = input('Tags will be appended for ALL bookmarks. Enter \x1b[1my\x1b[21m to confirm: ')
+            if resp != 'y':
+                return
+
+            self.cur.execute('SELECT id, tags FROM bookmarks ORDER BY id ASC')
+        else:
+            self.cur.execute('SELECT id, tags FROM bookmarks WHERE id = ?', (index,))
+
+        resultset = self.cur.fetchall()
+        for row in resultset:
+            tags = '%s%s' % (row[1], tag_manual[1:])
+            tags = parse_tags([tags])
+            self.cur.execute('UPDATE bookmarks SET tags = ? WHERE id = ?', (tags, row[0],))
+
+        self.conn.commit()
+
+    def update_bookmark(self, index, url='', title_manual=None,
+                        tag_manual=None, desc=None, append_tag=False):
         """ Update an existing record at index
         Update all records if index is 0 and url is not specified.
         URL is an exception because URLs are unique in DB.
 
-        :param index: int position to update
+        :param index: int position to update, 0 for all
         :param url: address
         :param tag_manual: string of comma-separated tags to add manually
         :param title_manual: string title to add manually
@@ -461,9 +486,12 @@ class BukuDb:
 
         # Update tags if passed as argument
         if tag_manual is not None:
-            query = '%s tags = ?,' % query
-            arguments += (tag_manual,)
-            to_update = True
+            if append_tag:
+                self.append_tag_at_index(index, tag_manual)
+            else:
+                query = '%s tags = ?,' % query
+                arguments += (tag_manual,)
+                to_update = True
 
         # Update description if passed as an argument
         if desc is not None:
@@ -487,7 +515,7 @@ class BukuDb:
                 print('\x1B[91mTitle: []\x1B[0m')
             elif debug:
                 print('Title: [%s]' % meta)
-        elif not to_update:
+        elif not to_update and not append_tag:
             self.refreshdb(index)
             if index > 0:
                 self.print_bookmark(index)
@@ -668,7 +696,8 @@ class BukuDb:
         Print only bookmarks with blank title or tag if empty is True
         Note: URL is printed on top because title may be blank
 
-        Params: index to print, flag to show only bookmarks with no title or tags
+        Params: index to print (0 for all)
+	        empty flag to show only bookmarks with no title or tags
         """
 
         if index == 0:  # Show all entries
@@ -982,6 +1011,7 @@ def connect_server(url, fullurl=False, forced=False):
 
     urlconn.request('GET', url, None, {
         'Accept-encoding': 'gzip',
+        'DNT': '1',
     })
     return (urlconn, urlconn.getresponse())
 
@@ -1558,8 +1588,15 @@ if __name__ == '__main__':
         tags = DELIMITER
         keywords = args.addurl
         if tagManual is not None:
-            # Add DELIMITER as url+tags may not end with comma
-            keywords = args.addurl + [DELIMITER] + tagManual
+            if tagManual[0] == '+' and len(tagManual) == 1:
+                pass
+            elif tagManual[0] == '+':
+                tagManual = tagManual[1:]
+                # In case of add, args.addurl may have URL followed by tags
+                # Add DELIMITER as url+tags may not end with comma
+                keywords = args.addurl + [DELIMITER] + tagManual
+            else:
+                keywords = args.addurl + [DELIMITER] + tagManual
 
         if len(keywords) > 1:
             tags = parse_tags(keywords[1:])
@@ -1581,10 +1618,18 @@ if __name__ == '__main__':
         else:
             new_url = ''
 
+        append = False
+        if tagManual is not None:
+            if tagManual[0] == '+' and len(tagManual) == 1:
+                tagManual = None
+            elif tagManual[0] == '+':
+                tagManual = tagManual[1:]
+                append = True
+
         # Parse tags into a comma-separated string
         tags = parse_tags(tagManual)
 
-        bdb.update_bookmark(update_index, new_url, titleManual, tags, description)
+        bdb.update_bookmark(update_index, new_url, titleManual, tags, description, append)
 
     # Delete record(s)
     if args.delete is not None: